Valve



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EDWIN H. DAVIS, OF BATT-LE CREEK, MICHIGAN, SSIGN'OR T0 .AllERICN' ST PUMP CCMPANY, F BATTLE CREEK, MICHIGAN, A CORPORATION 0F MICHIGAN.

VALVE.

Application mea April-4,1921. serial no. 458,377.

` citizen of the United States, yresiding at Battle Creek, in the county of C'alhoun and State of Michigan, have invented Certain new and useful Improvements in Valves; and Ik hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings,lwhich form part of this speciication.

This invention is a novel valve, especially` adapted for use in so-called emulsifying machines. IThe invention provides a valve which can be used for smoothing milk or cream and removing the fat globules therefrom by forcing same under high pressure between two highlypolishedrdisks or surfaces yin the valve, which disks are preferably formed of lass ory othersuitable noncorrosive or hig ly wear resisting material.

The objects of the invention are to make a valve of this nature in which the main operative parts are readily accessible for removal, cleansing or repairs; and which is ,simpler thanA other valves now on thel market for the same purpose.

l will explain the kinvention with reference to the accompanying drawings which illustrate one practical l embodiment ,thereof and refer to the claims for summaries ,of the essentials of the invention and novel features of construction and cpmbinations of parts for which protection is desired;

In said drawings; .l

Fig. 1 is a vertical longitudinal section through the complete valve.

Fig. 2 is a transverse section on the line.

" 2 2 Fig. 1.

Fig. 3 is a transverse section on the line 3 3 Fig. 1.

Fig; 4 is a 4:4 ig. 1. A

The emb diment of the-invention shown in the dra in consists 'of a main cylindric body 1 w ich is provided with upper andilowerplanges l? and 1b and is preferably smoothly dressed on its upper and lower surfaces, and has an axial bore or chamber 1c which may be contracted at its lower end as shown at 1. The chamber 1c` has an outlet opening 1t (Fig. 1) the outer end of which is preferably internally threaded for connectlon with a discharge pipe (not shown).

partial vertical section on line 'I connect the bottom member 2 from the body 1, so that the interior of the body member, and the smoothing disksv hereinafter referred to, can ,be easily removed, cleansed and replaced.

The bottom member has a recess 2e in its upper: side in which is placed a disk 3 which vis preferably formed of hard highly polished glass, but it may be formed of any other suitable material. This disk 3 has an axial opening 3a which connects with a preferablyl axially disposed inlet opening 2g in the member 2. The outer end of this open-, ing 2g may be internally threaded as shown for connection with a supply pipe- (not shown).

The disk 3 is of a larger diameter than the outer end of the openmg 1e in the body, and it is closely fitted against the lower end of the body .1 and is tightly clamped thereto by means of the bolts 2, so that fluid can not leak between the disk and end of body 1.

Mounted upon the disk 3 within the body 14 is a smaller similar disk 4, which is smooth and highly polished on its under side to register with the smooth and [highl polished upper side of the disk 3. The dis 4 is preferabl made of the same material asthe disk This disk 4 covers 3 an is imperforate.

'the opening- 3a .in disk 3 and is centered in the lower end of the opening in the bod by means of lugs 1h, indicated in Fig. 3,' wV ich may projectV from the side walls of the opening 1*. l any other suitable manner provided a passage or passages are left for the flow of fluid between the said disk and the wafll of the soV This disk 4 may be centered in As shown this yoke bonnet member 6 has a cylindric flange 6n on its lower end which is closely fitted to the upper end and flange l of the. body l and is firmly secured therelo by any suitable means, preferably by tap bolts extending through apertures in the flange (ia and engaging threaded apertures in the flange 1a see Figs. -2 and 4). The yoke bonnet has a stuffing box 6g through which the stem 5 passes, and said stufiing box may be lled with any suitable packing and closed by a gland 7, of the usual construction, fastened to the yoke bonnet by means of tap bolts 7 in the usual nuinuer (see Fig. 2). From the base of this bonnet member rises the yoke portion 6e and in the top of this yoke is an opening through which the upper end of the stem 5 passes. ln this ,pening is secured a removable bushug preferably of bronzeor other suitable metal, which is externally threaded on its upper end and secured in place by a cap nu( H".

The bushing 8 is provided with internal ihreaifls which engage a. correspondingly threaded. portion of the stem and the siem is provided above the bushing with any suitable means lor turning it, a hand wheel 5 being shown in the drawings. The thread should be made very fine, or of very slight pitch, so that it is possible to get a very fine regulation of the amount of separation of' the disk l frein the disk 3. Practically the valve thread is so fine that the valve stem would travel a very slight distance for each quarter turn thereof.

ln operation, when the parts are properly assembled, the disk 4 should be set down upon the disk 3; and then slightly released so that fluid, such as'milk` can be forced under very great pressure between the disks 3 and 4, the amount of pressure required to force the liquid between the disks being regulable by adjusting the stem 5, the stem holding the disk @L against the fluid pressure and slightly spaced from its seat on the disk 3. This valve can be used in connection with a suitable fluid pump for emulsifying milk or other fluids in the Well known manner, and further description thereof is unnecessary.

It is obvious that changes might be made in nonessentials of the structure of' the valve While retaining the essentials of the invention and I do not consider it limited to the specific construction shown; therefore what I claim is:

l. A valve comprising a body having an axial chamber, and an outlet communicating with said chamber; a bottom member having an axial opening, and a recess in its upper side; means for securing the bottom member to one end of the body member; a disk ronlined in the recess in the bottom member; said disk having a small axial fluid passage; an imperforate disk Within the chamber and adapted to close said fluid passage; a yoke member; means for attaching the yoke member to the body, said yoke member having a Valve stem guide; and a valve stem extending through the guide into the chamber and adapted to engage the second disk and hold it against the fluid presing with the axial opening of the bottom member and the chamber in the body; a smaller disk Within the body member adapted to close said fluid passage; a yoke bonnet member; means for attaching the bonnet member to the body, said bonnet member having a stuffing box and a valve stem guide above the stuffing box; and a valve stem extending through the stuffing box and guide into the chamber and adapted to engage the smaller disk and hold it against the fluid pressure tocontrol the flow of fluid between the disks, substantially as described.

3. A valve comprising a body having an axial chamber; an outlet communicating With said chamber and upper and lower external flanges; a bottom member having an axial opening, a recess in its upper side and a peripheral flange; bolts engaging the opposed flanges of the body and bottom member for securing the bottom member to the body member; a disk in the recess inthe bottom member having an axial fluid passage communicating with the axial open'r ing of the body member and the chamber in the bod a second disk within the body member a apted to close said fluid gef, a yoke bonnet member having a flange, bolts uniting the flanges of the, bonnet member and body, said bonnet member havi stuffing box and a valve stem guide the stuffing box; and a Valve stem e ing through the valve stem guide andstuling box into the chamber, and adapte-.il to engage the second disk and hold it against the fluid pressure to control the flowr of fluid between the disks.

4. A valve comprising a casing having a chamber, an outlet communicating with said chamber andan inlet; a flat surfaced disk confined in the casing between` the inlet and said chamber and having a small central fluid passage communicating with said inlet and chamber, an unattached flat disk within the chamber adapted to cover the fluid passage in the other disk; and a valve stem projecting into the chamber and adapted to freely engage the unattached disk and hold itagainst the Huid pressure to cause the Huid to spread in a thin film between the disks before entering the chamber, the disks being formed of hard polished refractory non-metallic material, substantially as described.

5. A valve comprising a body having a chamber, a recess below the chamber, an outlet communicating with said chamber, and an inlet; a flat surfaced disk confined in the said `recess and having a small axial fluid passageJ communicating with the inlet and chamber; a second fiat surfaced disk within the chamber adapted to cover the fluid passage in the other disk; and a valve stem projecting into the chamber and adapted to engage the second named disk and hold it against the fluid pressure in position opposite the other disk to cause the fluid to spread in ya thin fllm between the disks before entering the chamber, the second disk ermitting passage of fluid between its eldges and the wall of the chamber of the body .and both disks being made of hard non-metallic refractoryv material, substantially as described. e

6. A valve comprising a body having a chamber and an outlet communicating with said'chamber; a bottom member having an inlet; means for securing the bottom member to the body; a disk confined between the body and the bottom member; said disk having a small axial iuid passage communieating with the inlet and said chamber; a. second disk smaller than said first mentioned disk, and located above the first disk and spaced from the inner wall of the body; and a valve stem projecting into the chamber and having its inner end flattened and freely bearing on the surface 'of the smaller disk and adapted to hold the smaller disk against the fluid pressure to cause the fluid to spread in a thin film between the disks before entering the chamber, substantially as described.

7. A valve comprising a body having a chamber and an outlet communicating with said chamber; a bottom member having a recess in its upper side and an inlet communicating with said recess; means for se curing the bottom member toY the body; a disk confined in the recess in the bottom member and having a small axial fluid passage; a second Hat disk loosely confined within the body; a yoke member attached to the other end of the body; and a valve stem projecting through the yoke member into the body and having its inner end loosely engaged with the second disk and adapted to hold it against the uid pres.

sure to cause the fluid to spread in a thin film between the disks substantially as described.

In testimony that I claim the foregoing as my! own, I aix my signature.

` EDWIN H. DAVIS. 

